Little change CameraFacade

Confirm CameraFacade in Android 5.1. closes #94

* In fact, CameraFacade worked with Android 5.1 emulator, I just confirmed.
* Enhance: Enable autofocus timeout. (Emulator never fit the focus...)
* Enhance: Fit getParameter and setParameter.
* Enhance: Camera not used in creation.
* Enhance: listup function was appended.